[go: up one dir, main page]

EP2568195B1 - Loop web provided with a seam - Google Patents

Loop web provided with a seam Download PDF

Info

Publication number
EP2568195B1
EP2568195B1 EP12360059.5A EP12360059A EP2568195B1 EP 2568195 B1 EP2568195 B1 EP 2568195B1 EP 12360059 A EP12360059 A EP 12360059A EP 2568195 B1 EP2568195 B1 EP 2568195B1
Authority
EP
European Patent Office
Prior art keywords
material band
splice
serrations
flat strip
width
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12360059.5A
Other languages
German (de)
French (fr)
Other versions
EP2568195A1 (en
Inventor
Pierre-Régis Frey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tanals Par Actions Simplifiees (sas) Ste
Original Assignee
Tanals Par Actions Simplifiees (sas) Ste
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tanals Par Actions Simplifiees (sas) Ste filed Critical Tanals Par Actions Simplifiees (sas) Ste
Publication of EP2568195A1 publication Critical patent/EP2568195A1/en
Application granted granted Critical
Publication of EP2568195B1 publication Critical patent/EP2568195B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G3/00—Belt fastenings, e.g. for conveyor belts
    • F16G3/02—Belt fastenings, e.g. for conveyor belts with series of eyes or the like, interposed and linked by a pin to form a hinge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G3/00—Belt fastenings, e.g. for conveyor belts

Definitions

  • the present invention relates to a strip of loop material, such as in particular a power transmission belt, a conveyor belt, a conveyor or the like, comprising at least one flat ribbon having at least one reversible junction zone for mounting and dismounting. of said strip of material in a loop, said reversible junction zone comprising at least two interlocking serrations of complementary shapes each provided in the plane of one end of said flat ribbon, said serrations each comprising at least one tooth delimited by a periphery and being arranged to be crossed, after their interlocking, by at least one removable transverse rod for locking and unlocking said junction area.
  • loop material webs either as a power transmission element such as a belt or as a transport element such as a conveyor belt, conveyor, etc.
  • a power transmission element such as a belt
  • a transport element such as a conveyor belt, conveyor, etc.
  • strips of material have, in a conventional manner, a structure and technical characteristics specifically adapted to the intended application.
  • Power transmission belts are conventionally made from materials designed to improve their fatigue life and to withstand all the mechanical, physical and / or chemical stresses to which they are commonly subjected during use.
  • those marketed under the name PolyChain® and made of a lightweight and robust polyurethane compound are stand out for their excellent mechanical performance and very high resistance to fatigue.
  • Such transmission belts are in particular four times stronger than traditional belts because they are reinforced by means of spiral flexible traction cables, for example carbon or Kevlar®, embedded in their thickness. They are in the form of endless sleeves, manufactured in press in a mold whose diameter determines the length, these sleeves being cut or detailed according to the desired width of each belt.
  • such transmission belts advantageously see their strength properties preserved.
  • they have the disadvantage of requiring both for their installation on a machine, and for their withdrawal for replacement, disassembly of the machine, or even the intervention of the manufacturer of the machine, imposing a stop of the machine detrimental to the profitability of the production tool.
  • the handling operations of such transmission belts, whether of the PolyChain® type or of any other type, in the form of endless sleeves, therefore prove to be particularly laborious, time-consuming, and costly.
  • the publication EP 2,108,860 relating to a strip of loop material intended to be used as a conveyor belt, provides to equip said strip with a junction zone comprising two interlocking serrations obtained by stamping, and in which the teeth are delimited by a rectangular periphery and have different lengths so that the ends of the teeth are offset longitudinally relative to each other.
  • the major disadvantage of this solution when implemented in the context of a power transmission belt, is that the proposed form for said teeth has sharp angles.
  • the polyurethane used in the context of a PolyChain® type power transmission belt is so hard that conventional stamping tools wear out very quickly and become deformed, making it impossible to reproduce with sufficient precision the complementary shapes of the serrations of the junction zone, thus penalizing the mechanical strength of the junction.
  • the present invention aims to overcome these disadvantages by proposing a strip of loop material having at least one reversible junction zone arranged to allow its assembly and dismounting on site and to preserve the properties of mechanical strength and fatigue life of the looped material web, so that it competes in strength with any other material web without junction and is suitable for use both as a power transmission belt and as a conveyor or the like.
  • Another object of the invention is to propose a strip of loop material comprising at least one junction zone whose production is optimized, does not cause premature deterioration of the tooling and leads to serrations having a shape of a perfect precision.
  • the invention relates to a strip of loop material of the kind indicated in the preamble, characterized in that it comprises at least two junction zones in which said serrations extend over only a part of its width so that when said strip of material is assembled in a loop around two pulleys, the strands of said strip which extend respectively between the two pulleys are continuous and without junction on at least a portion of their width, whatever the position in rotation of said loop of material.
  • the serrations of a first junction zone are offset laterally and longitudinally with respect to the serrations of the second junction zone so that, when said band of material is assembled in a loop, said first and second zones junction are diametrically opposed.
  • said strip of material may comprise a flat ribbon provided with said first and second junction zones which each extend over part of the width of said flat ribbon.
  • Said strip of material may also comprise a first flat ribbon provided with said first junction zone and a second flat ribbon provided with said second junction zone, said first and second flat ribbons being arranged side by side and in such a way, one relative to each other, that when said ends of said first and second flat ribbons are joined, said first and second junction areas are diametrically opposed.
  • said strip of material comprises a flat ribbon provided with two junction zones which each extend over a width less than half the width of said flat ribbon, the serrations of a first junction zone being laterally offset from the serrations of the second joining area so that when said material web is looped together, said first and second joining areas are aligned in the width of said web of material and delimit between them a central portion continuous and without junction.
  • said strip of material comprises a flat ribbon provided with three junction zones each extending over a width less than one third of half the width of said flat ribbon, the serrations of said junction zones being laterally offset. and arranged in chevron so that, when said strip of material is assembled in a loop, the three junction zones are aligned in the width of said strip of material, are symmetrical with respect to the median axis of said flat ribbon and delimit between them two continuous intermediate portions and without junction.
  • the serrations of said junction zones comprise at least one tooth, said tooth being delimited by a circumference of asymmetrical shape with respect to the longitudinal axis of said tooth parallel to the median axis of said flat ribbon.
  • the periphery of said tooth comprises at least a portion of straight line substantially parallel to the longitudinal edges of said flat ribbon.
  • the periphery of said tooth substantially has a shape of a right-angled triangle whose apex is rounded
  • the present invention is also characterized in that said periphery of said tooth comprises at least one shoulder whose angles are rounded.
  • the teeth of the same junction zone may be aligned and of equal length.
  • the present invention relates to a strip of loop material 100, 110, 120, 130 comprising at least one flat strip 2 made, in the illustrated examples, of a material such as polyurethane or neoprene® type or the like.
  • a material such as polyurethane or neoprene® type or the like.
  • the flat ribbon 2 has on its underside 20 a surface equipped with notches 21 arranged to cooperate with toothed pulleys 10a, 10b (cf. Fig. 7 and 8 ).
  • a tensile core consisting of a plurality of spiral cables (not shown) embedded in its thickness, for example made of carbon, steel, stainless steel, fiberglass, or Kevlar®, arranged parallel to each other and inclined relative to the longitudinal edges 23 of said flat ribbon 2.
  • the invention s' also applies to a strip of material 2 notched or not, wherein the flat strip 2 is made of a material different from those indicated above, such as for example thermoplastic polyurethane, or any other equivalent synthetic material and / or composite.
  • the cables embedded in the flat ribbon 2 can also be made of a material such as for example steel, fiberglass or any other equivalent material and can extend parallel to each other and to the longitudinal edges 23 of said ribbon 2.
  • such a strip of material 2 could also include a textile tensile core and / or an external textile structure.
  • the flat ribbon 2 has at least one reversible junction zone 3, 30 for mounting and disassembly of said strip of loop material 100, 110, 120, 130 on site.
  • This junction zone 3, 30 comprises at least two interlocking serrations 3a, 3b, 30a, 30b, of complementary shapes, each formed, for example by stamping or any other equivalent method, in the plane of the ends of said flat ribbon 2.
  • These serrations 3a, 3b, 30a, 30b have transverse passages 7, made for example in the form of smooth bores, arranged to be traversed each, after the interlocking of the serrations 3a, 3b, 30a, 30b, by a removable transverse rod 22 (cf. Fig. 5 ) for locking and unlocking the junction zone 3, 30.
  • the serrations 3a, 3b, 30a, 30b each comprise at least one tooth 4, 40, delimited by a periphery 4 ', 40' whose angles are preferably rounded.
  • the number of teeth 4, 40 that includes a serration 3a, 3b, 30a, 30b is determined in particular by the width of the flat ribbon 2.
  • the serrations 3a, 3b, 30a, 30b illustrated in FIGS. figures 2 and 4 have more teeth 4, 40 than those illustrated in figures 1 and 3 formed on a narrower flat ribbon 2. If the serrations comprise several teeth, these teeth 4, 40 are preferably aligned and of the same length.
  • the periphery 4 ', 40' of the teeth 4, 40 have an asymmetrical shape with respect to the longitudinal axis B of each tooth parallel to the central axis A of the flat ribbon 2, this shape being able to be declined according to different embodiments depending on the final application of the loop material web 1, and the desired flat ribbon physical characteristics 2.
  • Such an asymmetrical shape of the teeth 4, 40 advantageously makes it possible to optimize the cutting of the teeth in the width of the flat ribbon 2, and to further facilitate the drilling of the transverse passages 7 by means of a conventional tooling.
  • the serrations 3a, 3b of the junction zone 3 extend over the entire width of the flat ribbon 2, while the teeth 4 have substantially a right-angled triangle whose apex 5 is rounded, and one side 6 is parallel to the longitudinal edges 23 of the flat ribbon 2.
  • the stamping of the ends of the flat ribbon 2 in order to make serrations 3a, 3b whose teeth 4 have such a triangular shape advantageously leads to cut at different lengths the cables of traction, arranged in the thickness of the flat ribbon 2 inclined relative to the longitudinal edges 23 of the latter.
  • the free ends of the traction cables, extending in the teeth 4 are not aligned with each other.
  • Such a characteristic contributes to improving the fatigue life of the strip of loop material 1 by reducing the weak point and the point of flexural stiffness located at the limit of the junction zone 3.
  • a triangular shape allows a better ejection of the flat ribbon 2 after the step of stamping its ends to manufacture the serrations 3a, 3b. This makes it possible to improve the precision of cutting of the two serrations 3a, 3b, and to guarantee the respect of their complementary shapes while limiting the deformation of the stamping tools.
  • the serrations 3a, 3b have no sharp angle, which also contributes to improving the service life. This is particularly true in the variant embodiments such as those illustrated, in which the flat ribbon 2 is made of a very hard polyurethane while the traction cables, made of carbon or Kevlar. ® are flexible, such materials being particularly suitable for use of the loop material web 1 as a power transmission belt.
  • the example shown in figure 3 is more particularly suitable for a strip of material 1 obtained from a flat ribbon 2 having a width so small that the serrations 30a, 30b of the junction zone 30 can hardly have more than one tooth 40.
  • a triangular tooth is difficult to achieve by stamping.
  • the present invention provides conferring on the tooth 40 of one of the serrations 30b a generally elongate shape in which its periphery 40 'has a rounded apex 5 and at least one shoulder 8.
  • the other serration 30a comprises two half-teeth 40 distributed from each side of the tooth 40 of the serration 30b.
  • a tooth form 40 is also adapted in the context of a flat ribbon 2 of greater width (cf. Fig. 4 and 5 ).
  • the serrations 30a, 30b of the junction zone 30 may comprise teeth 40 with a shoulder 8 or several shoulders 8, these shoulders 8 being preferably offset for each tooth 40 in order to avoid cutting all the cables of traction at the same height and thus prevent any excessive rigidity fracture.
  • such a tooth form 40 having at least one shoulder 8 also allows better ejection of the flat ribbon 2, after the step of stamping its ends to manufacture the serrations 30a, 30b.
  • transverse rods 22 cf. Fig. 5
  • said transverse rods 22 may be introduced into said transverse passages 7 all from only one of the longitudinal edges 23 of the flat ribbon 2 or certain from one of said longitudinal edges 23 and others from the other longitudinal edge 23.
  • their introduction from the two longitudinal edges 23 limits the opening of the teeth 4, 40 and therefore increase the mechanical strength of the junction zone 3, 30.
  • the transverse rods 22 may consist of standard screws, for example of self-tapping type, provided with standard heads housed in a first bore provided in the side of said strip of material 2, to be accessible by a tool provided with a standard screwdriver and avoid damaging the pulleys 10a, 10b.
  • An assembly of screw-nut type, making it possible to mitigate any inadvertent opening of the junction zone 3, 30 is also conceivable, the nut being situated in a second bore provided in the opposite side of said strip of material 2.
  • the figure 6 illustrates a flat ribbon 2 having two joining zones 3, according to the embodiment illustrated in FIGS. Figures 1 and 2 for example, or any other form of equivalent junction such as that illustrated in Figures 3 to 5 .
  • the two junction zones 3 are offset laterally and longitudinally with respect to one another, and the serrations 3a, 3b of each junction zone 3 extend over only a portion of the width of said flat ribbon 2, for example half of said width.
  • Such a flat ribbon 2 makes it possible to obtain a strip of loop material 100 as illustrated in FIG. figure 7 having two junction zones 3 diametrically opposite. Thanks to this specific construction, when the material strip 100 is assembled in a loop around two pulleys 10a, 10b according to the figure 7 , the strands of this strip which extend respectively between the two pulleys 10a, 10b, namely a strand and a soft strand, are continuous and without junction on at least a portion 9 of their width, whatever the rotational position of the strip of material 100 in a loop.
  • the junction areas 3 are thus less loaded and fatigue much less, which allows to extend the life of the strip of material 100 or at least not to penalize this lifetime.
  • This solution makes it possible to compete in terms of resistance with all non-junction continuous transmission belts.
  • FIG. figure 8 An equivalent and simpler result can be achieved by means of a strip of material 110 shown in FIG. figure 8 comprising two flat ribbons 2, namely a first flat ribbon 2 equipped with a first junction zone 30 and a second flat ribbon 2 equipped with a second junction zone 30.
  • Each junction zone 30 may correspond to the embodiment represented at Figures 3 to 5 , or any other form of equivalent junction such as that illustrated in Figures 1 and 2 , and extends over the width of the flat ribbon 2 concerned.
  • the first and second flat ribbons 2 are arranged side by side along their common longitudinal edge 23, and in such a way with respect to each other, as when said ends of said first and second flat ribbons 2 are assembled, said first and second junction areas 30 are diametrically opposed.
  • the strands of this strip which extend respectively between the two pulleys 10a, 10b are continuous and without junction on at least a portion 9 of their width, regardless of the rotational position of the strip of material 110 in a loop.
  • Figures 9 to 12 illustrate two other embodiments of loop material web 120, 130 in which the joining areas 3, 30 are concentrated in a single strand.
  • the figure 9 illustrates a first embodiment of a flat ribbon 2 for forming the loop material web 120 illustrated in FIG. figure 10 having two junction zones 30, made for example according to the variant illustrated in FIGS. Figures 3 to 5 or any other equivalent variant such as that illustrated in Figures 1 and 2 , laterally offset and each extending over a width less than half the width of the flat ribbon 2.
  • the two joining zones 30 are aligned in the width of said strip, arranged on either side of the central axis A of the flat ribbon 2, and delimit between them a continuous median portion 9, without junction, offering the same advantages in terms of strength as the previous examples.
  • the figure 11 illustrates a second embodiment of a flat ribbon 2 for forming the loop material web 130 illustrated in FIG. figure 12 having three junction zones 30, made for example according to the variant illustrated in FIGS. Figures 3 to 5 or any other equivalent variant such as that illustrated in Figures 1 and 2 , offset laterally, arranged in chevron and extending over a width less than one third of the width of the flat ribbon 2.
  • the three junction zones 30 are aligned in the width of said band, arranged symmetrically to the median axis A of the flat ribbon 2, and delimit between them two continuous intermediate portions 9, without junction, offering the same advantages in terms of strength as the previous examples.
  • This symmetrical construction also allows balancing efforts in the 130 material strip obtained, in fact particularly suitable for high speed installations or high power.
  • the invention achieves the goals set, namely to provide a strip of loop material 100, 110, 120, 130 assembled by its junction areas 3, 30, providing mechanical strength and an optimized fatigue life, thus making it possible to compete in terms of mechanical strength with any other belt without junction, which can act as a power transmission belt as well as a conveyor belt, and which can also be applied to all known and future materials and structures.
  • the mechanical performance obtained being such that it is possible in some cases to reduce the width of the original strips.
  • junction zones 3, 30 of the conveyor belt according to the invention advantageously have characteristics such that their manufacture can be carried out with great precision while leaving the tools used and slowing down its wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Belt Conveyors (AREA)

Description

Domaine technique:Technical area:

La présente invention concerne une bande de matière en boucle, telle que notamment une courroie de transmission de puissance, une bande transporteuse, un convoyeur ou similaire, comportant au moins un ruban plat présentant au moins une zone de jonction réversible permettant le montage et le démontage de ladite bande de matière en boucle, ladite zone de jonction réversible comportant au moins deux dentelures emboîtables de formes complémentaires prévues chacune dans le plan d'une extrémité dudit ruban plat, lesdites dentelures comportant chacune au moins une dent délimitée par un pourtour et étant agencées pour être traversées, après leur emboîtement, par au moins une tige transversale amovible permettant de verrouiller et de déverrouiller ladite zone de jonction.The present invention relates to a strip of loop material, such as in particular a power transmission belt, a conveyor belt, a conveyor or the like, comprising at least one flat ribbon having at least one reversible junction zone for mounting and dismounting. of said strip of material in a loop, said reversible junction zone comprising at least two interlocking serrations of complementary shapes each provided in the plane of one end of said flat ribbon, said serrations each comprising at least one tooth delimited by a periphery and being arranged to be crossed, after their interlocking, by at least one removable transverse rod for locking and unlocking said junction area.

Technique antérieure :Prior art:

De nombreux domaines de l'industrie mettent en oeuvre des bandes de matière en boucle, que ce soit en tant qu'élément de transmission de puissance tel qu'une courroie ou en tant qu'élément de transport tel qu'une bande transporteuse, un convoyeur, etc. Ces bandes de matière présentent, de manière classique, une structure et des caractéristiques techniques spécifiquement adaptées en fonction de l'application visée.Many fields of industry use loop material webs, either as a power transmission element such as a belt or as a transport element such as a conveyor belt, conveyor, etc. These strips of material have, in a conventional manner, a structure and technical characteristics specifically adapted to the intended application.

Les courroies de transmission de puissance sont classiquement réalisées à partir de matériaux conçus pour améliorer leur durée de vie eh fatigue et résister à l'ensemble des contraintes mécaniques, physiques et/ou chimiques auxquelles elles sont couramment soumises en cours d'utilisation. Parmi les courroies de transmission de puissance disponibles sur le marché à l'heure actuelle, celles commercialisées sous le nom PolyChain® et réalisées en un composé de polyuréthane léger et robuste se démarquent par leurs excellentes performances mécaniques et leur très grande résistance à la fatigue. De telles courroies de transmission sont notamment quatre fois plus résistantes que les courroies traditionnelles car elles sont renforcées au moyen de câbles de traction souples spiralés, par exemple en carbone ou en Kevlar®, noyés dans leur épaisseur. Elles se présentent sous la forme de manchons sans fin, fabriqués sous presse dans un moule dont le diamètre en détermine la longueur, ces manchons étant coupés ou détaillés en fonction de la largeur souhaitée de chaque courroie. Du fait d'une telle structure sans fin, sans zone de jonction, de telles courroies de transmission voient avantageusement leurs propriétés de résistance mécanique préservées. Toutefois, elles ont l'inconvénient de nécessiter aussi bien pour leur installation sur une machine, que pour leur retrait en vue de leur remplacement, un démontage de la machine, voire l'intervention du fabricant de la machine, imposant un arrêt de la machine préjudiciable sur la rentabilité de l'outil de production. A l'heure actuelle, les opérations de manutention de telles courroies de transmission, qu'elles soient de type PolyChain® ou de tout autre type, se présentant sous la forme de manchons sans fin, se révèlent par conséquent particulièrement laborieuses, chronophages, et coûteuses.Power transmission belts are conventionally made from materials designed to improve their fatigue life and to withstand all the mechanical, physical and / or chemical stresses to which they are commonly subjected during use. Among the power transmission belts currently available on the market, those marketed under the name PolyChain® and made of a lightweight and robust polyurethane compound are stand out for their excellent mechanical performance and very high resistance to fatigue. Such transmission belts are in particular four times stronger than traditional belts because they are reinforced by means of spiral flexible traction cables, for example carbon or Kevlar®, embedded in their thickness. They are in the form of endless sleeves, manufactured in press in a mold whose diameter determines the length, these sleeves being cut or detailed according to the desired width of each belt. Because of such an endless structure, without junction area, such transmission belts advantageously see their strength properties preserved. However, they have the disadvantage of requiring both for their installation on a machine, and for their withdrawal for replacement, disassembly of the machine, or even the intervention of the manufacturer of the machine, imposing a stop of the machine detrimental to the profitability of the production tool. At the present time, the handling operations of such transmission belts, whether of the PolyChain® type or of any other type, in the form of endless sleeves, therefore prove to be particularly laborious, time-consuming, and costly.

Les solutions de jonctions réversibles couramment mises en oeuvre dans le domaine des bandes transporteuses et décrites dans un certain nombre de publications ne se révèlent pas totalement satisfaisantes lorsqu'elles sont transposées en tant que telles aux courroies de transmission de puissance, telles que celles précédemment décrites, qui supposent, comme évoqué, une structure apte à résister à des contraintes mécaniques, dues notamment aux forts couples de puissance à transmettre et à une vitesse de rotation élevée, qui sont nettement supérieures à celles rencontrées dans le domaine du transport.The reversible junction solutions commonly used in the field of conveyor belts and described in a number of publications are not completely satisfactory when they are transposed as such to power transmission belts, such as those previously described. , which assume, as evoked, a structure capable of withstanding mechanical stresses, due in particular to the high power torques to be transmitted and at a high speed of rotation, which are clearly greater than those encountered in the field of transport.

Ainsi, la publication EP 2 108 860 , se rapportant à une bande de matière en boucle destinée à être utilisée en tant que bande transporteuse, prévoit d'équiper ladite bande d'une zone de jonction comportant deux dentelures emboîtables, obtenues par estampage, et dans lesquelles les dents sont délimitées par un pourtour rectangulaire et présentent des longueurs différentes de sorte que les extrémités des dents sont décalées longitudinalement les unes par rapport aux autres. L'inconvénient majeur de cette solution, lorsqu'elle est mise en oeuvre dans le cadre d'une courroie de transmission de puissance, est du au fait que la forme proposée pour lesdites dents présente des angles vifs. En effet, bien qu'une telle caractéristique soit tout à fait adaptée dans le cas d'une bande transporteuse, classiquement réalisée à partir d'un matériau tel que du polyuréthane extrudé renforcé par des câbles de traction longitudinaux en acier, il apparaît que la présence de tout angle vif diminue fortement la durée de vie d'une courroie de transmission, notamment du type PolyChain®, fabriquée à partir de polyuréthane comparativement plus dur et dont les câbles de traction spiralés sont plus souples. En outre, une zone de jonction dans laquelle les extrémités des dents présentent un décalage longitudinal nécessite également davantage de tiges de verrouillage, ce qui rend le montage d'une telle jonction moins aisé. De plus, le polyuréthane utilisé dans le cadre d'une courroie de transmission de puissance de type PolyChain® est tellement dur que les outillages d'estampage classiques s'usent très rapidement et se déforment, ne permettant pas de reproduire avec suffisamment de précision les formes complémentaires des dentelures de la zone de jonction, pénalisant ainsi la résistance mécanique de la jonction.So, the publication EP 2,108,860 , relating to a strip of loop material intended to be used as a conveyor belt, provides to equip said strip with a junction zone comprising two interlocking serrations obtained by stamping, and in which the teeth are delimited by a rectangular periphery and have different lengths so that the ends of the teeth are offset longitudinally relative to each other. The major disadvantage of this solution, when implemented in the context of a power transmission belt, is that the proposed form for said teeth has sharp angles. Indeed, although such a characteristic is quite suitable in the case of a conveyor belt, conventionally made from a material such as extruded polyurethane reinforced with longitudinal steel traction cables, it appears that the The presence of any sharp angle greatly reduces the service life of a drive belt, especially of the PolyChain® type, made from comparatively harder polyurethane and with more flexible spiral pull cables. In addition, a junction zone in which the ends of the teeth have a longitudinal offset also requires more locking rods, which makes the assembly of such a junction less easy. In addition, the polyurethane used in the context of a PolyChain® type power transmission belt is so hard that conventional stamping tools wear out very quickly and become deformed, making it impossible to reproduce with sufficient precision the complementary shapes of the serrations of the junction zone, thus penalizing the mechanical strength of the junction.

Une autre solution, décrite dans la publication US 3,744,095 , prévoit d'équiper les extrémités d'une courroie de transmission comportant des câbles de traction longitudinaux, de dentelures en forme de créneaux destinées à être assemblées au moyen de tiges de verrouillage filetées. L'inconvénient d'une telle découpe en créneaux réside non seulement dans la présence d'angles vifs au niveau des dentelures, mais également dans le fait que les câbles sont tous sectionnés à la même hauteur, de façon alignée sur toute la largeur de la courroie, dont la fatigue est alors fortement favorisée. Bien que la forme des dentelures en créneaux proposée par cette publication soit adaptée dans le cas de câbles longitudinaux, elle ne peut être transposée à une courroie de transmission de puissance, notamment du type PolyChain®, dans laquelle les câbles sont spiralés. En effet, les découpes parallèles aux bords longitudinaux de la courroie effectuées lors de l'estampage des dentelures, impliquent de sectionner longitudinalement au moins un câble spiralé, ce qui a pour conséquence de réduire la durée de vie en fatigue de ladite courroie dans la zone de jonction.Another solution, described in the publication US 3,744,095 , provides to equip the ends of a transmission belt comprising longitudinal traction cables, crenellations toothed to be assembled by means of threaded locking rods. The disadvantage of such slotted cutting is not only the presence of sharp angles at the serrations, but also the fact that the cables are all cut at the same height, aligned along the entire width of the tooth. belt, whose fatigue is then strongly favored. Although the shape of the serrated serrations proposed by this publication is adapted in the case of longitudinal cables, it can not be transposed to a power transmission belt, in particular of the PolyChain® type, in which the cables are spiraled. Indeed, the cuts parallel to the longitudinal edges of the belt made during the stamping of the serrations, involve cutting longitudinally at least one spiral cable, which has the effect of reducing the fatigue life of said belt in the area. junction.

Un autre example est décrit dans la publication JP11311300 Explosé de l'invention : Another example is described in the publication JP11311300 Exploded of the invention:

La présente invention vise à pallier ces inconvénients en proposant une bande de matière en boucle présentant au moins une zone de jonction réversible agencée pour permettre son assemblage et son démontage sur site et pour préserver les propriétés de résistance mécanique et de durée de vie en fatigue de la bande de matière en boucle, de sorte que celle-ci rivalise en termes de résistance avec n'importe quelle autre bande de matière sans jonction et soit adaptée pour un usage aussi bien en tant que courroie de transmission de puissance qu'en tant que convoyeur ou similaire. Un autre but de l'invention est de proposer une bande de matière en boucle comportant au moins une zone de jonction dont la fabrication est optimisée, ne provoque pas une détérioration prématurée de l'outillage et conduit à des dentelures présentant une forme d'une parfaite précision.The present invention aims to overcome these disadvantages by proposing a strip of loop material having at least one reversible junction zone arranged to allow its assembly and dismounting on site and to preserve the properties of mechanical strength and fatigue life of the looped material web, so that it competes in strength with any other material web without junction and is suitable for use both as a power transmission belt and as a conveyor or the like. Another object of the invention is to propose a strip of loop material comprising at least one junction zone whose production is optimized, does not cause premature deterioration of the tooling and leads to serrations having a shape of a perfect precision.

Dans ce but, l'invention concerne une bande de matière en boucle du genre indiqué en préambule, caractérisée en ce qu'elle comporte au moins deux zones de jonction dans lesquelles lesdites dentelures s'étendent sur une partie seulement de sa largeur de sorte que, lorsque ladite bande de matière est assemblée en boucle autour de deux poulies, les brins de ladite bande qui s'étendent respectivement entre les deux poulies sont continus et sans jonction sur au moins une portion de leur largeur quelque soit la position en rotation de ladite bande de matière en boucle.For this purpose, the invention relates to a strip of loop material of the kind indicated in the preamble, characterized in that it comprises at least two junction zones in which said serrations extend over only a part of its width so that when said strip of material is assembled in a loop around two pulleys, the strands of said strip which extend respectively between the two pulleys are continuous and without junction on at least a portion of their width, whatever the position in rotation of said loop of material.

Dans une première variante de réalisation, les dentelures d'une première zone de jonction sont décalées latéralement et longitudinalement par rapport aux dentelures de la seconde zone de jonction de sorte que, lorsque ladite bande de matière est assemblée en boucle, lesdites première et seconde zones de jonction sont diamétralement opposées.In a first variant embodiment, the serrations of a first junction zone are offset laterally and longitudinally with respect to the serrations of the second junction zone so that, when said band of material is assembled in a loop, said first and second zones junction are diametrically opposed.

Dans cette variante, ladite bande de matière peut comporter un ruban plat pourvu desdites première et seconde zones de jonction qui s'étendent chacune sur une partie de la largeur dudit ruban plat.In this variant, said strip of material may comprise a flat ribbon provided with said first and second junction zones which each extend over part of the width of said flat ribbon.

Ladite bande de matière peut également comporter un premier ruban plat pourvu de ladite première zone de jonction et un second ruban plat pourvu de ladite seconde zone de jonction, lesdits premier et second rubans plats étant disposés côte à côte et de manière telle, l'un par rapport à l'autre, que lorsque lesdites extrémités desdits premier et second rubans plats sont assemblées, lesdites première et seconde zones de jonction sont diamétralement opposées.Said strip of material may also comprise a first flat ribbon provided with said first junction zone and a second flat ribbon provided with said second junction zone, said first and second flat ribbons being arranged side by side and in such a way, one relative to each other, that when said ends of said first and second flat ribbons are joined, said first and second junction areas are diametrically opposed.

Dans une deuxième variante de réalisation, ladite bande de matière comporte un ruban plat pourvu de deux zones de jonction qui s'étendent chacune sur une largeur inférieure à la moitié de la largeur dudit ruban plat, les dentelures d'une première zone de jonction étant décalées latéralement par rapport aux dentelures de la seconde zone de jonction de sorte que, lorsque ladite bande de matière est assemblée en boucle, lesdites première et seconde zones de jonction sont alignées dans la largeur de ladite bande de matière et délimitent entre elles une portion centrale continue et sans jonction.In a second variant embodiment, said strip of material comprises a flat ribbon provided with two junction zones which each extend over a width less than half the width of said flat ribbon, the serrations of a first junction zone being laterally offset from the serrations of the second joining area so that when said material web is looped together, said first and second joining areas are aligned in the width of said web of material and delimit between them a central portion continuous and without junction.

Dans une troisième variante de réalisation, ladite bande de matière comporte un ruban plat pourvu de trois zones de jonction s'étendant chacune sur une largeur inférieure au tiers de la moitié de la largeur dudit ruban plat, les dentelures desdites zones de jonction étant décalées latéralement et disposées en chevron de sorte que, lorsque ladite bande de matière est assemblée en boucle, les trois zones de jonction sont alignées dans la largeur de ladite bande de matière, sont symétriques par rapport à l'axe médian dudit ruban plat et délimitent entre elles deux portions intermédiaires continues et sans jonction.In a third variant embodiment, said strip of material comprises a flat ribbon provided with three junction zones each extending over a width less than one third of half the width of said flat ribbon, the serrations of said junction zones being laterally offset. and arranged in chevron so that, when said strip of material is assembled in a loop, the three junction zones are aligned in the width of said strip of material, are symmetrical with respect to the median axis of said flat ribbon and delimit between them two continuous intermediate portions and without junction.

Les dentelures desdites zones de jonction comportent au moins une dent, ladite dent étant délimitée par un pourtour de forme asymétrique par rapport à l'axe longitudinal de ladite dent parallèle à l'axe médian dudit ruban plat.The serrations of said junction zones comprise at least one tooth, said tooth being delimited by a circumference of asymmetrical shape with respect to the longitudinal axis of said tooth parallel to the median axis of said flat ribbon.

Selon une variante de réalisation, le pourtour de ladite dent comporte au moins une portion de droite sensiblement parallèle aux bords longitudinaux dudit ruban plat.According to an alternative embodiment, the periphery of said tooth comprises at least a portion of straight line substantially parallel to the longitudinal edges of said flat ribbon.

Conformément à une autre variante de réalisation, le pourtour de ladite dent présente sensiblement une forme de triangle rectangle dont le sommet est arrondi,According to another variant embodiment, the periphery of said tooth substantially has a shape of a right-angled triangle whose apex is rounded,

La présente invention se caractérise également en ce que ledit pourtour de ladite dent comporte au moins un épaulement dont les angles sont arrondis.The present invention is also characterized in that said periphery of said tooth comprises at least one shoulder whose angles are rounded.

Par ailleurs, si les dentelures desdites zones de jonction comportent plusieurs dents, les dents d'une même zone de jonction peuvent être alignées et de longueur égale.Moreover, if the serrations of said junction zones comprise several teeth, the teeth of the same junction zone may be aligned and of equal length.

Description sommaire des dessins :Brief description of the drawings:

La présente invention et ses avantages apparaîtront mieux dans la description suivante de plusieurs modes de réalisation donnés à titre d'exemples non limitatifs, en référence aux dessins annexés, dans lesquels :

  • les figures 1 et 2 représentent des vues en perspective d'une zone de jonction dans deux bandes de matière en boucle de différentes largeurs comportant des dents conformes à un exemple,
  • les figures 3 et 4 représentent des vues en perspective d'une zone de jonction dans deux bandes de matière en boucle de différentes largeurs comportant des dents conformes à deux autres exemples.
  • la figure 5 représente une vue en perspective de la bande de matière illustrée à la figure 4 avant l'assemblage de la zone de jonction,
  • la figure 6 représente une vue de dessus d'un ruban plat agencé pour former la bande de matière en boucle représentée à la figure 7 comportant deux zones de jonction diamétralement opposées,
  • la figure 8 représente une variante de réalisation de la bande de matière en boucle illustrée à la figure 7,
  • la figure 9 représente une vue de dessus d'un ruban plat selon une autre forme de réalisation, agencé pour former la bande de matière en boucle représentée à la figure 10 comportant deux zones de jonction alignées, et
  • la figure 11 représente une vue de dessus d'un ruban plat selon encore une autre forme de réalisation, agencé pour former la bande de matière en boucle représentée à la figure 12 comportant trois zones de jonction alignées en chevron.
The present invention and its advantages will appear better in the following description of several embodiments given as non-limiting examples, with reference to the appended drawings, in which:
  • the Figures 1 and 2 are perspective views of a junction zone in two bands of loop material of different widths with teeth in accordance with an example,
  • the Figures 3 and 4 are perspective views of a junction zone in two bands of loop material of different widths with teeth in accordance with two other examples.
  • the figure 5 represents a perspective view of the strip of material illustrated in FIG. figure 4 before joining the junction area,
  • the figure 6 is a top view of a flat ribbon arranged to form the loop material web shown in FIG. figure 7 having two diametrically opposite junction zones,
  • the figure 8 represents an alternative embodiment of the strip of loop material illustrated in FIG. figure 7 ,
  • the figure 9 represents a top view of a flat ribbon according to another embodiment, arranged to form the loop material strip shown in FIG. figure 10 having two aligned junction areas, and
  • the figure 11 is a top view of a flat ribbon according to yet another embodiment, arranged to form the loop material web shown in FIG. figure 12 having three joining zones aligned in chevron.

Illustrations de l'invention et différentes manières de la réaliser :Illustrations of the invention and different ways of making it:

En référence aux figures 6-12, la présente invention concerne une bande de matière en boucle 100, 110, 120, 130 comportant au moins un ruban plat 2 réalisé, dans les exemples illustrés, en un matériau tel que le polyuréthane ou du type néoprène® ou similaire. Un tel matériau présente avantageusement les caractéristiques mécaniques requises pour résister aux contraintes auxquelles une bande de matière 100, 110, 120, 130 est soumise, qu'elle soit utilisée en tant que bande transporteuse ou en tant que courroie de transmission de puissance. Dans les exemples illustrés, le ruban plat 2 présente sur sa face inférieure 20 une surface équipée de crans 21 agencés pour coopérer avec des poulies crantées 10a, 10b (cf. fig. 7 et 8). Elle comporte en outre une âme de traction constituée d'une pluralité de câbles spiralés (non représentés) noyés dans son épaisseur, réalisés par exemple en carbone, en acier, en acier inoxydable, en fibre de verre, ou en Kevlar®, disposés parallèlement les uns par rapport aux autres et de manière inclinée par rapport aux bords longitudinaux 23 dudit ruban plat 2. Bien entendu, l'invention s'applique également à une bande de matière 2 crantée ou non, dans laquelle le ruban plat 2 est réalisé en un matériau différent de ceux indiqués précédemment, tel que par exemple du polyuréthane thermoplastique, ou tout autre matériau équivalent synthétique et/ou composite. De même, les câbles noyés dans le ruban plat 2 peuvent également être réalisés en un matériau tel que par exemple l'acier, la fibre de verre ou tout autre matériau équivalent et peuvent s'étendre parallèlement entre eux et aux bords longitudinaux 23 dudit ruban plat 2. Enfin, une telle bande de matière 2 pourrait également comporter une âme de traction textile et/ou une structure externe textile.With reference to Figures 6-12 the present invention relates to a strip of loop material 100, 110, 120, 130 comprising at least one flat strip 2 made, in the illustrated examples, of a material such as polyurethane or neoprene® type or the like. Such a material advantageously has the mechanical characteristics required to withstand the stresses to which a web of material 100, 110, 120, 130 is subjected, whether it is used as a conveyor belt or as a power transmission belt. In the examples illustrated, the flat ribbon 2 has on its underside 20 a surface equipped with notches 21 arranged to cooperate with toothed pulleys 10a, 10b (cf. Fig. 7 and 8 ). It further comprises a tensile core consisting of a plurality of spiral cables (not shown) embedded in its thickness, for example made of carbon, steel, stainless steel, fiberglass, or Kevlar®, arranged parallel to each other and inclined relative to the longitudinal edges 23 of said flat ribbon 2. Of course, the invention s' also applies to a strip of material 2 notched or not, wherein the flat strip 2 is made of a material different from those indicated above, such as for example thermoplastic polyurethane, or any other equivalent synthetic material and / or composite. Similarly, the cables embedded in the flat ribbon 2 can also be made of a material such as for example steel, fiberglass or any other equivalent material and can extend parallel to each other and to the longitudinal edges 23 of said ribbon 2. Finally, such a strip of material 2 could also include a textile tensile core and / or an external textile structure.

De manière classique, le ruban plat 2 présente au moins une zone de jonction réversible 3, 30 permettant le montage et le démontage de ladite bande de matière en boucle 100, 110, 120, 130 sur site. Cette zone de jonction 3, 30 comporte au moins deux dentelures emboîtables 3a, 3b, 30a, 30b, de formes complémentaires, formées chacune, par exemple par estampage ou tout autre procédé équivalent, dans le plan des extrémités dudit ruban plat 2. Ces dentelures 3a, 3b, 30a, 30b comportent des passages transversaux 7, réalisés par exemple sous la forme d'alésages lisses, agencés pour être traversés chacun, après l'emboîtement des dentelures 3a, 3b, 30a, 30b, par une tige transversale amovible 22 (cf. fig. 5) permettant de verrouiller et de déverrouiller la zone de jonction 3, 30. Par ailleurs, les dentelures 3a, 3b, 30a, 30b comportent chacune au moins une dent 4, 40, délimitée par un pourtour 4', 40' dont les angles sont de préférence arrondis. Le nombre de dents 4, 40 que comporte une dentelure 3a, 3b, 30a, 30b est notamment déterminé par la largeur du ruban plat 2. Les dentelures 3a, 3b, 30a, 30b illustrées aux figures 2 et 4 comportent davantage de dents 4, 40 que celles illustrées aux figures 1 et 3, formées sur un ruban plat 2 plus étroit. Si les dentelures comportent plusieurs dents, ces dents 4, 40 sont de préférence alignées et de même longueur.Conventionally, the flat ribbon 2 has at least one reversible junction zone 3, 30 for mounting and disassembly of said strip of loop material 100, 110, 120, 130 on site. This junction zone 3, 30 comprises at least two interlocking serrations 3a, 3b, 30a, 30b, of complementary shapes, each formed, for example by stamping or any other equivalent method, in the plane of the ends of said flat ribbon 2. These serrations 3a, 3b, 30a, 30b have transverse passages 7, made for example in the form of smooth bores, arranged to be traversed each, after the interlocking of the serrations 3a, 3b, 30a, 30b, by a removable transverse rod 22 (cf. Fig. 5 ) for locking and unlocking the junction zone 3, 30. Furthermore, the serrations 3a, 3b, 30a, 30b each comprise at least one tooth 4, 40, delimited by a periphery 4 ', 40' whose angles are preferably rounded. The number of teeth 4, 40 that includes a serration 3a, 3b, 30a, 30b is determined in particular by the width of the flat ribbon 2. The serrations 3a, 3b, 30a, 30b illustrated in FIGS. figures 2 and 4 have more teeth 4, 40 than those illustrated in figures 1 and 3 formed on a narrower flat ribbon 2. If the serrations comprise several teeth, these teeth 4, 40 are preferably aligned and of the same length.

Conformément à l'invention, et tel qu'illustré aux figures 6 à 12, le pourtour 4', 40' des dents 4, 40 présentent une forme asymétrique par rapport à l'axe longitudinal B de chaque dent parallèle à l'axe médian A du ruban plat 2, cette forme pouvant être décliné selon différentes variantes de réalisation en fonction de l'application finale de la bande de matière en boucle 1, et des caractéristiques physiques du ruban plat 2 souhaitées. Une telle forme asymétrique des dents 4, 40 permet avantageusement d'optimiser la découpe des dents dans la largeur du ruban plat 2, et de faciliter ultérieurement le perçage des passages transversaux 7 au moyen d'un outillage classique.According to the invention, and as illustrated in Figures 6 to 12 , the periphery 4 ', 40' of the teeth 4, 40 have an asymmetrical shape with respect to the longitudinal axis B of each tooth parallel to the central axis A of the flat ribbon 2, this shape being able to be declined according to different embodiments depending on the final application of the loop material web 1, and the desired flat ribbon physical characteristics 2. Such an asymmetrical shape of the teeth 4, 40 advantageously makes it possible to optimize the cutting of the teeth in the width of the flat ribbon 2, and to further facilitate the drilling of the transverse passages 7 by means of a conventional tooling.

Dans l'exemple illustré aux figures 1 et 2, les dentelures 3a, 3b de la zone de jonction 3 s'étendent sur l'ensemble de la largeur du ruban plat 2, tandis que les dents 4 présentent sensiblement une forme de triangle rectangle dont le sommet 5 est arrondi, et dont un côté 6 est parallèle aux bords longitudinaux 23 du ruban plat 2. L'estampage des extrémités du ruban plat 2 en vue de réaliser des dentelures 3a, 3b dont les dents 4 présentent une telle forme triangulaire, conduit avantageusement à sectionner à différentes longueurs les câbles de traction, disposés dans l'épaisseur du ruban plat 2 de manière inclinée par rapport aux bords longitudinaux 23 de ce dernier. Ainsi, les extrémités libres des câbles de traction, s'étendant dans les dents 4, ne sont pas alignées les unes par rapport aux autres. Une telle caractéristique contribue à améliorer la durée de vie en fatigue de la bande de matière en boucle 1 par diminution du point faible et du point de rupture de rigidité en flexion situé en limite de la zone de jonction 3. D'autre part, une forme triangulaire permet une meilleure éjection du ruban plat 2 après l'étape d'estampage de ses extrémités en vue de fabriquer les dentelures 3a, 3b. Ceci permet d'améliorer la précision de découpe des deux dentelures 3a, 3b, et de garantir le respect de leurs formes complémentaires tout en limitant la déformation des outils d'estampage.In the example shown in Figures 1 and 2 , the serrations 3a, 3b of the junction zone 3 extend over the entire width of the flat ribbon 2, while the teeth 4 have substantially a right-angled triangle whose apex 5 is rounded, and one side 6 is parallel to the longitudinal edges 23 of the flat ribbon 2. The stamping of the ends of the flat ribbon 2 in order to make serrations 3a, 3b whose teeth 4 have such a triangular shape, advantageously leads to cut at different lengths the cables of traction, arranged in the thickness of the flat ribbon 2 inclined relative to the longitudinal edges 23 of the latter. Thus, the free ends of the traction cables, extending in the teeth 4, are not aligned with each other. Such a characteristic contributes to improving the fatigue life of the strip of loop material 1 by reducing the weak point and the point of flexural stiffness located at the limit of the junction zone 3. On the other hand, a triangular shape allows a better ejection of the flat ribbon 2 after the step of stamping its ends to manufacture the serrations 3a, 3b. This makes it possible to improve the precision of cutting of the two serrations 3a, 3b, and to guarantee the respect of their complementary shapes while limiting the deformation of the stamping tools.

Par ailleurs, du fait que le sommet 5 des dents 4 est arrondi, les dentelures 3a, 3b ne présentent aucun angle vif, ce qui contribue également à améliorer la durée de vie en fatigue de la bande de matière en boucle 1. Ceci se vérifie particulièrement dans les variantes de réalisation telles que celles illustrées, dans lesquelles le ruban plat 2 est constitué d'un polyuréthane très dur tandis que les câbles de traction, réalisés en carbone ou Kevlar® sont souples, de tels matériaux étant particulièrement adaptés à une utilisation de la bande de matière en boucle 1 en tant que courroie de transmission de puissance.Moreover, because the top 5 of the teeth 4 is rounded, the serrations 3a, 3b have no sharp angle, which also contributes to improving the service life. This is particularly true in the variant embodiments such as those illustrated, in which the flat ribbon 2 is made of a very hard polyurethane while the traction cables, made of carbon or Kevlar. ® are flexible, such materials being particularly suitable for use of the loop material web 1 as a power transmission belt.

L'exemple illustré à la figure 3 convient plus particulièrement à une bande de matière 1 obtenue à partir d'un ruban plat 2 présentant une largeur tellement faible que les dentelures 30a, 30b de la zone de jonction 30 ne peuvent guère comporter plus d'une dent 40. Dans ce cas, une dent de forme triangulaire est difficilement réalisable par estampage. Ainsi, afin de garantir qu'après l'étape d'estampage des extrémités du ruban plat 2, les câbles de traction soient sectionnés à différentes longueurs et leurs extrémités libres ne soient pas alignées les unes par rapport aux autres, la présente invention prévoit de conférer à la dent 40 d'une des dentelures 30b une forme générale allongée dans laquelle son pourtour 40' comporte un sommet arrondi 5 et au moins un épaulement 8. Dans ce cas, l'autre dentelure 30a comporte deux demi-dents 40 réparties de chaque côté de la dent 40 de la dentelure 30b. Bien entendu, une telle forme de dent 40 est également adaptée dans le cadre d'un ruban plat 2 de largeur plus importante (cf. fig. 4 et 5). Dans ce cas, les dentelures 30a, 30b de la zone de jonction 30 peuvent comporter des dents 40 à un épaulement 8 ou plusieurs épaulements 8, ces épaulements 8 étant de préférence décalés pour chaque dent 40 afin d'éviter de couper tous les câbles de traction à la même hauteur et prévenir ainsi toute rupture de rigidité trop importante. Comme dans l'exemple précédent, une telle forme de dent 40 comportant au moins un épaulement 8 permet également une meilleure éjection du ruban plat 2, après l'étape d'estampage de ses extrémités en vue de fabriquer les dentelures 30a, 30b. Les avantages définis par l'amélioration de la précision de découpe des deux dentelures 30a, 30b, le respect de leurs formes complémentaires et la préservation des outils d'estampage se manifestent par conséquent également dans le cadre de ces variantes de réalisation. Bien entendu, ces exemples de forme de dents ne sont pas limitatifs et s'étendent à toute autre forme asymétrique permettant d'atteindre les mêmes objectifs techniques.The example shown in figure 3 is more particularly suitable for a strip of material 1 obtained from a flat ribbon 2 having a width so small that the serrations 30a, 30b of the junction zone 30 can hardly have more than one tooth 40. In this case, a triangular tooth is difficult to achieve by stamping. Thus, to ensure that after the step of stamping the ends of the flat ribbon 2, the traction cables are cut to different lengths and their free ends are not aligned with each other, the present invention provides conferring on the tooth 40 of one of the serrations 30b a generally elongate shape in which its periphery 40 'has a rounded apex 5 and at least one shoulder 8. In this case, the other serration 30a comprises two half-teeth 40 distributed from each side of the tooth 40 of the serration 30b. Of course, such a tooth form 40 is also adapted in the context of a flat ribbon 2 of greater width (cf. Fig. 4 and 5 ). In this case, the serrations 30a, 30b of the junction zone 30 may comprise teeth 40 with a shoulder 8 or several shoulders 8, these shoulders 8 being preferably offset for each tooth 40 in order to avoid cutting all the cables of traction at the same height and thus prevent any excessive rigidity fracture. As in the previous example, such a tooth form 40 having at least one shoulder 8 also allows better ejection of the flat ribbon 2, after the step of stamping its ends to manufacture the serrations 30a, 30b. The advantages defined by the improvement of the cutting precision of the two serrations 30a, 30b, the respect of their complementary shapes and the preservation of the stamping tools are therefore also manifest in the context of these variant embodiments. Of course, these examples of tooth shape are not limiting and extend to any other asymmetrical shape to achieve the same technical objectives.

Les zones de jonction 3, 30 des variantes de réalisation illustrées aux figures 1 à 5 peuvent être verrouillées et déverrouillées au moyen de tiges transversales 22 (cf. fig. 5) introduites de manière réversible dans les passages transversaux 7. En fonction des applications de la bande de matière en boucle 1, lesdites tiges transversales 22 peuvent être introduites dans lesdits passages transversaux 7 toutes depuis un seul des bords longitudinaux 23 du ruban plat 2 ou certaines depuis un desdits bords longitudinaux 23 et d'autres depuis l'autre bord longitudinal 23. Dans ce dernier cas, et dans l'hypothèse où les tiges de verrouillage 22 sont toutes suffisamment longues pour s'étendre à travers l'ensemble de la largeur du ruban plat 2, leur introduction depuis les deux bords longitudinaux 23 permet de limiter l'ouverture des dents 4, 40 et par conséquent d'augmenter la résistance mécanique de la zone de jonction 3, 30.The joining zones 3, 30 of the embodiments illustrated in FIGS. Figures 1 to 5 can be locked and unlocked by means of transverse rods 22 (cf. Fig. 5 ) Depending on the applications of the loop material web 1, said transverse rods 22 may be introduced into said transverse passages 7 all from only one of the longitudinal edges 23 of the flat ribbon 2 or certain from one of said longitudinal edges 23 and others from the other longitudinal edge 23. In the latter case, and assuming that the locking rods 22 are all sufficiently long to extend across the entire width flat ribbon 2, their introduction from the two longitudinal edges 23 limits the opening of the teeth 4, 40 and therefore increase the mechanical strength of the junction zone 3, 30.

Par ailleurs, les tiges transversales 22 peuvent être constituées de vis standards, par exemple de type auto-taraudeuses, pourvues de têtes standards logées dans un premier alésage prévu dans le flanc de ladite bande de matière 2, pour être accessibles par un outil muni d'un embout de vissage standard et éviter d'endommager les poulies 10a, 10b. Un assemblage de type vis-écrou, permettant de pallier toute ouverture intempestive de la zone de jonction 3, 30 est également envisageable, l'écrou étant situé dans un second alésage prévu dans le flanc opposé de ladite bande de matière 2.Furthermore, the transverse rods 22 may consist of standard screws, for example of self-tapping type, provided with standard heads housed in a first bore provided in the side of said strip of material 2, to be accessible by a tool provided with a standard screwdriver and avoid damaging the pulleys 10a, 10b. An assembly of screw-nut type, making it possible to mitigate any inadvertent opening of the junction zone 3, 30 is also conceivable, the nut being situated in a second bore provided in the opposite side of said strip of material 2.

La figure 6 illustre un ruban plat 2 comportant deux zones de jonction 3, selon la forme de réalisation illustrée aux figures 1 et 2 par exemple, ou toute autre forme de jonction équivalente telle que celle illustrée aux figures 3 à 5. Les deux zones de jonction 3 sont décalées latéralement et longitudinalement l'une par rapport à l'autre, et les dentelures 3a, 3b de chaque zone de jonction 3 s'étendent sur une partie seulement de la largeur dudit ruban plat 2, par exemple sur la moitié de ladite largeur.The figure 6 illustrates a flat ribbon 2 having two joining zones 3, according to the embodiment illustrated in FIGS. Figures 1 and 2 for example, or any other form of equivalent junction such as that illustrated in Figures 3 to 5 . The two junction zones 3 are offset laterally and longitudinally with respect to one another, and the serrations 3a, 3b of each junction zone 3 extend over only a portion of the width of said flat ribbon 2, for example half of said width.

Un tel ruban plat 2 permet d'obtenir une bande de matière en boucle 100 telle qu'illustrée à la figure 7 comportant deux zones de jonction 3 diamétralement opposées. Grâce à cette construction spécifique, lorsque la bande de matière 100 est assemblée en boucle autour de deux poulies 10a, 10b selon la figure 7, les brins de cette bande qui s'étendent respectivement entre les deux poulies 10a, 10b, à savoir un brin tendu et un brin mou, sont continus et sans jonction sur au moins une portion 9 de leur largeur, quelque soit la position en rotation de la bande de matière 100 en boucle. Les zones de jonction 3 sont ainsi moins chargées et fatiguent beaucoup moins, ce qui permet de prolonger la durée de vie de la bande de matière 100 ou du moins de ne pas pénaliser cette durée de vie. Cette solution permet de rivaliser en termes de résistance avec toutes les courroies de transmission continue sans jonction.Such a flat ribbon 2 makes it possible to obtain a strip of loop material 100 as illustrated in FIG. figure 7 having two junction zones 3 diametrically opposite. Thanks to this specific construction, when the material strip 100 is assembled in a loop around two pulleys 10a, 10b according to the figure 7 , the strands of this strip which extend respectively between the two pulleys 10a, 10b, namely a strand and a soft strand, are continuous and without junction on at least a portion 9 of their width, whatever the rotational position of the strip of material 100 in a loop. The junction areas 3 are thus less loaded and fatigue much less, which allows to extend the life of the strip of material 100 or at least not to penalize this lifetime. This solution makes it possible to compete in terms of resistance with all non-junction continuous transmission belts.

Un résultat équivalent et plus simple à réaliser peut être atteint au moyen d'une bande de matière 110 représentée à la figure 8 comportant deux rubans plans 2, à savoir un premier ruban plat 2 équipé d'une première zone de jonction 30 et un second ruban plat 2 équipé d'une seconde zone de jonction 30. Chaque zone de jonction 30 peut correspondre à la forme de réalisation représentée aux figures 3 à 5, ou à toute autre forme de jonction équivalente telle que celle illustrée aux figures 1 et 2, et s'étend sur la largeur du ruban plat 2 concerné. Dans ce cas, les premier et second rubans plats 2 sont disposés côte à côte le long de leur bord longitudinal 23 commun, et de manière telle, l'un par rapport à l'autre, que lorsque lesdites extrémités desdits premier et second rubans plats 2 sont assemblées, lesdites première et seconde zones de jonction 30 sont diamétralement opposées. Comme dans l'exemple précédent, lorsque la bande de matière 110 est assemblée en boucle autour de deux poulies 10a, 10b, les brins de cette bande qui s'étendent respectivement entre les deux poulies 10a, 10b sont continus et sans jonction sur au moins une portion 9 de leur largeur, quelque soit la position en rotation de la bande de matière 110 en boucle.An equivalent and simpler result can be achieved by means of a strip of material 110 shown in FIG. figure 8 comprising two flat ribbons 2, namely a first flat ribbon 2 equipped with a first junction zone 30 and a second flat ribbon 2 equipped with a second junction zone 30. Each junction zone 30 may correspond to the embodiment represented at Figures 3 to 5 , or any other form of equivalent junction such as that illustrated in Figures 1 and 2 , and extends over the width of the flat ribbon 2 concerned. In this case, the first and second flat ribbons 2 are arranged side by side along their common longitudinal edge 23, and in such a way with respect to each other, as when said ends of said first and second flat ribbons 2 are assembled, said first and second junction areas 30 are diametrically opposed. As in the previous example, when the material strip 110 is assembled in a loop around two pulleys 10a, 10b, the strands of this strip which extend respectively between the two pulleys 10a, 10b are continuous and without junction on at least a portion 9 of their width, regardless of the rotational position of the strip of material 110 in a loop.

Les réalisations selon les figures 7 et 8, qui comportent une zone de jonction 3, 30 dans chacun des brins de la bande de matière 100, 110 en boucle, nécessitent d'avoir accès à ces deux brins. Or sur certaines installations, le montage de ces bandes de matière 100, 110 n'est pas possible.Achievements according to Figures 7 and 8 , which comprise a junction zone 3, 30 in each of the strands of the strip of material 100, 110 in a loop, require having access to these two strands. Now on some installations, the assembly of these strips of material 100, 110 is not possible.

Pour combler ce manque, les figures 9 à 12 illustrent deux autres formes de réalisation de bande de matière 120, 130 en boucle dans lesquelles les zones de jonction 3, 30 sont concentrées dans un seul brin.To fill this gap, Figures 9 to 12 illustrate two other embodiments of loop material web 120, 130 in which the joining areas 3, 30 are concentrated in a single strand.

La figure 9 illustre une première forme de réalisation d'un ruban plat 2 pour former la bande de matière 120 en boucle illustrée à la figure 10 comportant deux zones de jonction 30, réalisées par exemple selon la variante illustrée aux figures 3 à 5 ou selon toute autre variante équivalente telle que celle illustrée aux figures 1 et 2, décalées latéralement et s'étendant chacune sur une largeur inférieure à la moitié de la largeur du ruban plat 2. Ainsi en assemblant les extrémités du ruban plat 2 pour former la bande de matière 120, les deux zones de jonction 30 sont alignées dans la largeur de ladite bande, disposées de part et d'autre de l'axe médian A du ruban plat 2, et délimitent entre elles une portion 9 médiane continue, sans jonction, offrant les mêmes avantages en terme de résistance que les exemples précédents.The figure 9 illustrates a first embodiment of a flat ribbon 2 for forming the loop material web 120 illustrated in FIG. figure 10 having two junction zones 30, made for example according to the variant illustrated in FIGS. Figures 3 to 5 or any other equivalent variant such as that illustrated in Figures 1 and 2 , laterally offset and each extending over a width less than half the width of the flat ribbon 2. Thus by joining the ends of the flat ribbon 2 to form the material web 120, the two joining zones 30 are aligned in the width of said strip, arranged on either side of the central axis A of the flat ribbon 2, and delimit between them a continuous median portion 9, without junction, offering the same advantages in terms of strength as the previous examples.

La figure 11 illustre une seconde forme de réalisation d'un ruban plat 2 pour former la bande de matière 130 en boucle illustrée à la figure 12 comportant trois zones de jonction 30, réalisées par exemple selon la variante illustrée aux figures 3 à 5 ou toute autre variante équivalente telle que celle illustrée aux figures 1 et 2, décalées latéralement, disposées en chevron et s'étendant sur une largeur inférieure au tiers de la largeur du ruban plat 2. Ainsi en assemblant les extrémités du ruban plat 2 pour former la bande de matière 130, les trois zones de jonction 30 sont alignées dans la largeur de ladite bande, disposées symétriquement à l'axe médian A du ruban plat 2, et délimitent entre elles deux portions 9 intermédiaires continues, sans jonction, offrant les mêmes avantages en terme de résistance que les exemples précédents. Cette construction symétrique permet par ailleurs l'équilibrage des efforts dans la bande matière 130 obtenue, de fait particulièrement adaptée à des installations à grande vitesse ou à forte puissance.The figure 11 illustrates a second embodiment of a flat ribbon 2 for forming the loop material web 130 illustrated in FIG. figure 12 having three junction zones 30, made for example according to the variant illustrated in FIGS. Figures 3 to 5 or any other equivalent variant such as that illustrated in Figures 1 and 2 , offset laterally, arranged in chevron and extending over a width less than one third of the width of the flat ribbon 2. Thus by assembling the ends of the flat ribbon 2 to form the material band 130, the three junction zones 30 are aligned in the width of said band, arranged symmetrically to the median axis A of the flat ribbon 2, and delimit between them two continuous intermediate portions 9, without junction, offering the same advantages in terms of strength as the previous examples. This symmetrical construction also allows balancing efforts in the 130 material strip obtained, in fact particularly suitable for high speed installations or high power.

Possibilités d'application industrielle :Possibilities of industrial application:

Il ressort clairement de cette description que l'invention permet d'atteindre les buts fixés, à savoir proposer une bande de matière en boucle 100, 110, 120, 130 assemblable grâce à ses zones de jonction 3, 30, offrant une résistance mécanique et une durée de vie en fatigue optimisées, permettant ainsi de rivaliser en termes de résistance mécanique avec n'importe quelle autre courroie sans jonction, pouvant faire office aussi bien de courroie de transmission de puissance que de bande transporteuse, et pouvant également s'appliquer à toutes les matières et structures connues et à venir. Les performances mécaniques obtenues étant telles qu'il est possible dans certains cas de réduire la largeur des bandes d'origine.It is clear from this description that the invention achieves the goals set, namely to provide a strip of loop material 100, 110, 120, 130 assembled by its junction areas 3, 30, providing mechanical strength and an optimized fatigue life, thus making it possible to compete in terms of mechanical strength with any other belt without junction, which can act as a power transmission belt as well as a conveyor belt, and which can also be applied to all known and future materials and structures. The mechanical performance obtained being such that it is possible in some cases to reduce the width of the original strips.

Par ailleurs, les zones de jonction 3, 30 de la bande transporteuse selon l'invention présentent avantageusement des caractéristiques telles que leur fabrication peut être réalisée avec une grande précision tout en ménageant l'outillage utilisé et ralentissant son usure.Furthermore, the junction zones 3, 30 of the conveyor belt according to the invention advantageously have characteristics such that their manufacture can be carried out with great precision while leaving the tools used and slowing down its wear.

La présente invention n'est pas limitée aux exemples de réalisation décrits mais s'étend à toute modification et variante évidentes pour un homme du métier tout en restant dans l'étendue de la protection définie dans les revendications annexées.The present invention is not limited to the embodiments described but extends to any modification and variation obvious to a person skilled in the art while remaining within the scope of protection defined in the appended claims.

Claims (11)

  1. Looped material band (100, 110, 120, 130) such as in particular a power transmission belt, a conveyor belt, un conveyor or similar, including at least one flat strip (2) having at least one reversible splice area (3, 30) allowing assembling and disassembling said looped material band, said reversible splice area (3, 30) comprising at least two serrations (3a, 3b, 30a, 30b) with complementary shapes that can be engaged together, provided each in the plane of an end of said flat strip (2), said serrations (3a, 3b, 30a, 30b) comprising each at least one tooth (4, 40) delimited by a perimeter, comprising at least two splice areas (3, 30) in which said serrations (3a, 3b, 30a, 30b) extend on a part only of its width so that, when said material band is assembled in a loop around two pulleys (10a, 10b), the strands of said material band, which extend respectively between the two pulleys, are continuous and without splice on at least a portion (9) of their width, whatever the position in rotation of said looped material band, characterized in that said serrations (3a, 3b, 30a, 30b) are arranged in order to be crossed, after engaging them, by at least one removable transversal connecting pin (22) that allows locking and unlocking said splice area (3, 30, 31, 300).
  2. Material band according to claim 1, characterized in that the serrations (3a, 30a) of a first splice area (3, 30) are offset laterally and longitudinally with respect to the serrations (3b, 30b) of the second splice area (3, 30) so that, when said material band is assembled in a loop, said first and second splice areas (3, 30) are diametrically opposite.
  3. Material band according to claim 2, characterized in that it comprises a flat strip (2) provided with said first and second splice areas (3, 30), which extend each over a part of the width of said flat strip.
  4. Material band according to claim 2, characterized in that it comprises a first flat strip (2) provided with said first splice area (3, 30) and a second flat strip (2) provided with said second splice area (3, 30), said first and second flat strips (2) being arranged side by side and in such a way with respect to each other that, when said ends of said first and second flat strips (2) are assembled, said first and second splice areas (3, 30) are diametrically opposite.
  5. Material band according to claim 1, characterized in that it comprises a flat strip (2) provided with two splice areas (3, 30) that extend each over a width smaller than half the width of said flat strip, the serrations (3a, 30a) of a first splice area (3, 30) being offset laterally with respect to the serrations (3b, 30b) of the second splice area (3, 30) so that, when said material band is assembled in a loop, said first and second splice areas (3, 30) are aligned in the width of said material band and delimit between them a central portion (9) that is continuous and without splice.
  6. Material band according to claim 1, characterized in that it comprises a flat strip (2) provided with three splice areas (3, 30) that extend each over a width smaller than the third of the width of said flat strip, the serrations (3a, 3b, 30a, 30b) of said splice areas (3, 30) being offset laterally and aligned in a chevron arrangement so that, when said material band is assembled in a loop, the three splice areas (3, 30) are aligned in the width of said material band, are symmetrical with respect to the centerline (A) of said flat strip and delimit between them two intermediate portions (9) that are continuous and without splice.
  7. Material band according to any of the previous claims, characterized in that the serrations (3a, 3b, 30a, 30b) of said splice areas (3, 30) comprise at least one tooth (4, 40), said tooth (4, 40) being delimited by a perimeter (4', 40') with an asymmetric shape with respect to the longitudinal axis (B) of said tooth (4, 40) parallel to the centerline (A) of said flat strip (2).
  8. Material band according to claim 7, characterized in that said periphery (4', 40') comprises at least one straight line portion (6) that is substantially parallel to the longitudinal edges (23) of said flat strip (2).
  9. Material band according to any of claims 7 or 8, characterized in that said tooth (4) has substantially the shape of a rectangular triangle whose top (5) is rounded.
  10. Material band according to any of claims 7 to 9, characterized in that said periphery (4', 40') of said tooth (4, 40) comprises at least one shoulder (8) with rounded angles.
  11. Material band according to any of claims 7 to 10, in which the serrations (3a, 3b, 30a, 30b) of said splice areas (3, 30) comprise several teeth (4, 40), characterized in that said teeth (4, 40) are aligned and have equal lengths.
EP12360059.5A 2011-09-08 2012-08-03 Loop web provided with a seam Active EP2568195B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1157974A FR2979962B1 (en) 2011-09-08 2011-09-08 BAND OF LOOP MATERIAL WITH JUNCTION

Publications (2)

Publication Number Publication Date
EP2568195A1 EP2568195A1 (en) 2013-03-13
EP2568195B1 true EP2568195B1 (en) 2016-01-20

Family

ID=46651438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12360059.5A Active EP2568195B1 (en) 2011-09-08 2012-08-03 Loop web provided with a seam

Country Status (4)

Country Link
US (1) US8714345B2 (en)
EP (1) EP2568195B1 (en)
ES (1) ES2567184T3 (en)
FR (1) FR2979962B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704969A1 (en) * 2011-05-17 2012-11-30 Habasit Ag Belt with a releasable termination.
ITMO20130159A1 (en) * 2013-05-31 2014-12-01 Maurizio Vincenzi BELT ELEMENT
US20150005122A1 (en) * 2013-06-28 2015-01-01 Intelligrated Headquarters, Llc Conveyor drive belt connection
DE102013110027B3 (en) * 2013-09-12 2015-01-22 Sig Technology Ag Synchronous belt with belt lock
DE102017217484A1 (en) * 2017-09-29 2019-04-04 Contitech Antriebssysteme Gmbh Driving belt and method for its production
IT201800005717A1 (en) * 2018-05-25 2019-11-25 RING TIMING BELT WITH OPENABLE JOINT
IT201800005713A1 (en) * 2018-05-25 2019-11-25 RING TIMING BELT WITH OPENABLE JOINT
CN108750545A (en) * 2018-06-22 2018-11-06 安吉飞龙金属制品厂 A kind of height-adjustable spliced transmission device
US11009100B2 (en) * 2018-11-30 2021-05-18 Gregory A. Godsey Helical belt assembly, method of use, and kit therefore
DE102022130264A1 (en) * 2021-11-16 2023-05-17 Stadler Anlagenbau Gmbh Webbing for conveyor systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744095A (en) 1972-05-04 1973-07-10 Uniroyal Inc Splice for toothed power transmission belts
JP3252791B2 (en) * 1998-04-24 2002-02-04 日本メクトロン株式会社 Large endless belt
US7052426B2 (en) * 2002-01-25 2006-05-30 Xerox Corporation Seamed, conformable belt and method of making
WO2006052629A2 (en) * 2004-11-03 2006-05-18 Thermodrive Llc Thermoplastic belt connector
AU2007210968B2 (en) * 2006-01-31 2011-09-08 Laitram, L.L.C. Thermoplastic belt connector with fingers
ITBO20070640A1 (en) * 2007-09-24 2009-03-25 Vision Tech S R L METHOD FOR REALIZING A CLOSED RING BELT FOR THE CONVEYOR AND ORGAN BELT SO IT HAS OBTAINED
ITTO20080283A1 (en) * 2008-04-11 2009-10-12 Megadyne S & D S R L TOOTHED BELT

Also Published As

Publication number Publication date
US8714345B2 (en) 2014-05-06
US20130062168A1 (en) 2013-03-14
FR2979962A1 (en) 2013-03-15
EP2568195A1 (en) 2013-03-13
FR2979962B1 (en) 2014-06-06
ES2567184T3 (en) 2016-04-20

Similar Documents

Publication Publication Date Title
EP2568195B1 (en) Loop web provided with a seam
EP1951506B1 (en) Method of producing a strap on a structural element that is made from a composite material, particularly a connecting rod
EP0242263B1 (en) V-belt for a power transmission and method of making it
EP1954475B1 (en) Method of producing a connecting rod from a composite material
EP2310734B1 (en) Tightening device with collar
CH638595A5 (en) POWER TRANSMISSION BELT, ITS MANUFACTURING METHOD AND REINFORCING ELEMENT FOR ITS IMPLEMENTATION.
EP2949965B1 (en) Connecting arrangement for joining ends of an elongated member and an elongated member comprising said connecting arrangement
EP0222637B1 (en) Transmission belt
FR3069726A1 (en) CAGE ROTOR INJECTED
FR2792251A1 (en) SPOKES MADE OF COMPOSITE MATERIAL FOR A WHEEL, AND BICYCLE WHEEL EQUIPPED WITH SAID SPOKES
FR2915710A1 (en) Spoke of metal and composite material for spoked wheel has bridge as metal band with Young's modulus greater than or equal to 100,000 MPa, whereby band is inserted between and attached to two end pieces
EP1388488B1 (en) Reinforcement cable for rubber track
CA3181925A1 (en) Cable conveyor belt junction device provided with cable locking elements
FR2974158A1 (en) METHOD FOR MANUFACTURING A WEB OF LOOP MATERIAL AND BAND OF LOOP MATERIAL OBTAINED BY SAID METHOD
CH639734A5 (en) REINFORCED TRAPEZOIDAL BELT.
EP3751171A1 (en) Power transmission belt
EP2065318B1 (en) Structure with band or belt for handling products or transmitting movement and endless belt or band associated with such a structure
EP3957779B1 (en) Belt for tiller with frame for carrying plant stalks
FR2784622A1 (en) Composite spoke, for bicycle wheel formed from elongated bands of resin impregnated fibres which are folded one within the other and stuck together
EP3755920A1 (en) Power transmission belt
WO2024121423A1 (en) Conveyor belt and method for closing a conveyor belt
FR3143012A1 (en) DEVICE FOR CLOSING A CONVEYOR BELT, CONVEYOR BELT AND METHOD FOR CLOSING A CONVEYOR BELT
WO2025103618A1 (en) Method for manufacturing a belt
EP0879983B1 (en) Strap for a hose clamp and hose clamp
CA2208183C (en) Flexible tubular pipe comprising an interlocked armouring web

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20130702

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: F16G 3/02 20060101ALI20130819BHEP

Ipc: F16G 3/00 20060101ALI20130819BHEP

Ipc: F16G 1/28 20060101AFI20130819BHEP

17Q First examination report despatched

Effective date: 20140213

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150206

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150625

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20151008

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 771884

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160215

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012014079

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2567184

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20160420

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Ref country code: NL

Ref legal event code: MP

Effective date: 20160120

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 771884

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160420

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160421

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160520

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160520

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012014079

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

26N No opposition filed

Effective date: 20161021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160420

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160831

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160803

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120803

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20190902

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20190802

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20190719

Year of fee payment: 8

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200803

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200831

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200803

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20220110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200804

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240806

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240808

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20250825

Year of fee payment: 14